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In a pure spin current, electrons of opposite spins flow in opposite directions, thus information is conveyed by spin current without any charge current. This process almost causes no power consumption, which has the potential to realize ultra-low-power-consumption electronics. Recently, thermal effects in magnetic materials have attracted a great deal

In a pure spin current, electrons of opposite spins flow in opposite directions, thus information is conveyed by spin current without any charge current. This process almost causes no power consumption, which has the potential to realize ultra-low-power-consumption electronics. Recently, thermal effects in magnetic materials have attracted a great deal of attention because of its potential to generate pure spin currents using a thermal gradient (∇T), such as the spin Seebeck effect. However, unlike electric potential, the exact thermal gradient direction is experimentally difficult to control, which has already caused misinterpretation of the thermal effects in Py and Py/Pt films. In this work, we show that a well-defined ∇T can be created by two thermoelectric coolers (TECs) based on Peltier effect. The ∇T as well as its sign can be accurately controlled by the driven voltage on the TECs. Using a square-wave driven potential, thermal effects of a few μV can be measured. Using this technique, we have measured the anomalous Nernst effect in magnetic Co/Py and Py/Pt layers and determined their angular dependence. The angular dependence shows the same symmetry as the anomalous Hall effect in these films.
This work has been carried out under the guidance of the author’s thesis advisor, Professor Tingyong Chen.
ContributorsSimaie, Salar (Author) / Chen, Tingyon (Thesis director) / Alizadeh, Iman (Committee member) / Barrett, The Honors College (Contributor) / Mechanical and Aerospace Engineering Program (Contributor) / Department of Physics (Contributor)
Created2015-05
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This thesis attempts to explain Everettian quantum mechanics from the ground up, such that those with little to no experience in quantum physics can understand it. First, we introduce the history of quantum theory, and some concepts that make up the framework of quantum physics. Through these concepts, we reveal

This thesis attempts to explain Everettian quantum mechanics from the ground up, such that those with little to no experience in quantum physics can understand it. First, we introduce the history of quantum theory, and some concepts that make up the framework of quantum physics. Through these concepts, we reveal why interpretations are necessary to map the quantum world onto our classical world. We then introduce the Copenhagen interpretation, and how many-worlds differs from it. From there, we dive into the concepts of entanglement and decoherence, explaining how worlds branch in an Everettian universe, and how an Everettian universe can appear as our classical observed world. From there, we attempt to answer common questions about many-worlds and discuss whether there are philosophical ramifications to believing such a theory. Finally, we look at whether the many-worlds interpretation can be proven, and why one might choose to believe it.

ContributorsSecrest, Micah (Author) / Foy, Joseph (Thesis director) / Hines, Taylor (Committee member) / Computer Science and Engineering Program (Contributor) / Barrett, The Honors College (Contributor)
Created2021-05
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The purpose of this paper is to provide an analysis of entanglement and the particular problems it poses for some physicists. In addition to looking at the history of entanglement and non-locality, this paper will use the Bell Test as a means for demonstrating how entanglement works, which measures the

The purpose of this paper is to provide an analysis of entanglement and the particular problems it poses for some physicists. In addition to looking at the history of entanglement and non-locality, this paper will use the Bell Test as a means for demonstrating how entanglement works, which measures the behavior of electrons whose combined internal angular momentum is zero. This paper will go over Dr. Bell's famous inequality, which shows why the process of entanglement cannot be explained by traditional means of local processes. Entanglement will be viewed initially through the Copenhagen Interpretation, but this paper will also look at two particular models of quantum mechanics, de-Broglie Bohm theory and Everett's Many-Worlds Interpretation, and observe how they explain the behavior of spin and entangled particles compared to the Copenhagen Interpretation.

ContributorsWood, Keaten Lawrence (Author) / Foy, Joseph (Thesis director) / Hines, Taylor (Committee member) / Department of Physics (Contributor) / School of Mathematical and Statistical Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2021-05
Description
This research examines the impact of films about corporate scandals stemming from environmental disasters, specifically the film ​Dark Waters ​which details the decade-long toxic chemical release by DuPont. It will also explore what distinguishes these kinds of documentary films as successful and if they result in corporate change. Some films

This research examines the impact of films about corporate scandals stemming from environmental disasters, specifically the film ​Dark Waters ​which details the decade-long toxic chemical release by DuPont. It will also explore what distinguishes these kinds of documentary films as successful and if they result in corporate change. Some films about corporate injustices have been successful in shaping viewers’ opinions and have brought about actual changes in targeted corporations’ behaviors. However, in some instances, even though a film may hurt the public image of the corporation, it does not actually affect the operation of the business. The recently released film ​Dark Waters ​details the story of the lawyer and farmer behind the lawsuit that exposed the toxic chemical release by DuPont. The film chronicles how the lawsuit revealed how DuPont ignored and even tried to cover up how its chemicals were poisoning its own workers and the surrounding communities. It remains to be seen if this film will result in DuPont actually changing the ways it does business. In this research, I analyze three documentary films involving corporate scandals with environmental ramifications and determine if any changes were made as a result of the films and what aspects of these films caused them to be successful. My findings indicate that there are many factors that dictate whether or not a film is successful in bringing about change at the corporate level. Some of the factors include the type of corporation, how many people the scandal or environmental disaster affected, and where the incidents took place. Also, certain aspects of the film itself such as being directed or produced by well-known and respected directors and producers as well as employing famous actors can make a difference in the film’s overall impact.
ContributorsDelgado, Morgan Elyse (Author) / Ingram-Waters, Mary (Thesis director) / Hines, Taylor (Committee member) / Chemical Engineering Program (Contributor) / Dean, W.P. Carey School of Business (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
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Description

I wrote a literary analysis on the early history of quantum mechanics and the discovery of quantum tunneling. Quantum tunneling has led to the discovery of explanations of ideas like alpha decay radioactivity and the invention of the scanning tunneling microscope (STM). In this paper, I discussed these two topics,

I wrote a literary analysis on the early history of quantum mechanics and the discovery of quantum tunneling. Quantum tunneling has led to the discovery of explanations of ideas like alpha decay radioactivity and the invention of the scanning tunneling microscope (STM). In this paper, I discussed these two topics, with a focus on the STM.

ContributorsGross, Jamie (Author) / Foy, Joseph (Thesis director) / Hines, Taylor (Committee member) / Barrett, The Honors College (Contributor) / School of Molecular Sciences (Contributor) / Department of Psychology (Contributor)
Created2023-05
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Description

In thesis we will build up our operator theory for finite and infinite dimensional systems. We then prove that Heisenberg and Schrodinger representations are equivalent for systems with finite degrees of freedom. We will then make a case to switch to a C*-algebra formulation of quantum mechanics as we will

In thesis we will build up our operator theory for finite and infinite dimensional systems. We then prove that Heisenberg and Schrodinger representations are equivalent for systems with finite degrees of freedom. We will then make a case to switch to a C*-algebra formulation of quantum mechanics as we will prove that the Schrodinger and Heisenberg pictures become inadequate to full describe systems with infinitely many degrees of freedom because of inequivalent representations. This becomes important as we shift from single particle systems to quantum field theory, statistical mechanics, and many other areas of study. The goal of this thesis is to introduce these mathematical topics rigorously and prove that they are necessary for further study in particle physics.

ContributorsPerleberg, Sarah (Author) / Quigg, John (Thesis director) / Lebed, Richard (Committee member) / Barrett, The Honors College (Contributor) / Department of Physics (Contributor) / School of Mathematical and Statistical Sciences (Contributor)
Created2022-05
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Description
Glioblastoma brain tumors are among the most lethal human cancers. Treatment efforts typically involve both surgical tumor removal, as well as ongoing therapy. In this work, we propose the use of deuterium magnetic resonance imaging (MRI) to delineate tumor boundaries based on spatial distributions of deuterated leucine, as well as

Glioblastoma brain tumors are among the most lethal human cancers. Treatment efforts typically involve both surgical tumor removal, as well as ongoing therapy. In this work, we propose the use of deuterium magnetic resonance imaging (MRI) to delineate tumor boundaries based on spatial distributions of deuterated leucine, as well as resolve the metabolism of leucine within the tumor. Accurate boundary identification contributes to effectiveness of tumor removal efforts, while amino acid metabolism information may help characterize tumor malignancy and guide ongoing treatment. So, we first examine the fundamental mechanisms of deuterium MRI. We then discuss the use of spin-echo and gradient recall echo sequences for mapping spatial distributions of deuterated leucine, and the use of single-voxel spectroscopy for imaging metabolites within a tumor.
ContributorsCostelle, Anna (Author) / Beeman, Scott (Thesis director) / Kodibagkar, Vikram (Committee member) / Barrett, The Honors College (Contributor) / Department of Physics (Contributor) / School of Mathematical and Statistical Sciences (Contributor)
Created2022-05
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Description

This is a primer on the mathematic foundation of quantum mechanics. It seeks to introduce the topic in such a way that it is useful to both mathematicians and physicists by providing an extended example of abstract math concepts to work through and by going more in-depth in the math

This is a primer on the mathematic foundation of quantum mechanics. It seeks to introduce the topic in such a way that it is useful to both mathematicians and physicists by providing an extended example of abstract math concepts to work through and by going more in-depth in the math formalism than would normally be covered in a quantum mechanics class. The thesis begins by investigating functional analysis topics such as the Hilbert space and operators acting on them. Then it goes on to the postulates of quantum mechanics which extends the math formalism covered before to physics and works as the foundation for the rest of quantum mechanics.

ContributorsRedford, Thomas (Author) / Hines, Taylor (Thesis director) / Foy, Joseph (Committee member) / Barrett, The Honors College (Contributor) / Department of Physics (Contributor) / School of Mathematical and Statistical Sciences (Contributor)
Created2022-05
Description

New Leaf was founded with the mission to address the environmental, health, and sustainability consequences of paper production today. We explored the sourcing and foundations of paper needs, supporting our assumption that paper can be created from agricultural waste. We solidified a business plan using agricultural waste after considerable sourcing

New Leaf was founded with the mission to address the environmental, health, and sustainability consequences of paper production today. We explored the sourcing and foundations of paper needs, supporting our assumption that paper can be created from agricultural waste. We solidified a business plan using agricultural waste after considerable sourcing research and expert and consumerism input. We determined that using forest foliage that is a potential fire hazard from a national forest could be used as a source to make alternative paper as well as contribute to sustainability efforts.

ContributorsCoon, Chantel (Author) / Frechette, Joseph (Co-author) / Herzog, Tighe (Co-author) / Tryon, Matthew (Co-author) / Taylor, Kenzie (Co-author) / Byrne, Jared (Thesis director) / Larson, Wiley (Committee member) / Barrett, The Honors College (Contributor) / Department of Supply Chain Management (Contributor) / Dean, W.P. Carey School of Business (Contributor)
Created2023-05
Description

New Leaf was founded with the mission to address the environmental, health, and sustainability consequences of paper production today. We explored the sourcing and foundations of paper needs, supporting our assumption that paper can be created from agricultural waste. We solidified a business plan using agricultural waste after considerable sourcing

New Leaf was founded with the mission to address the environmental, health, and sustainability consequences of paper production today. We explored the sourcing and foundations of paper needs, supporting our assumption that paper can be created from agricultural waste. We solidified a business plan using agricultural waste after considerable sourcing research and expert and consumer input. We determined that forest foliage, a potential fire hazard, could be sourced from national forests and used to make alternative paper as well as contribute to sustainability efforts.

ContributorsFrechette, Joseph (Author) / Coon, Chantel (Co-author) / Herzog, Tighe (Co-author) / Tryon, Matthew (Co-author) / Taylor, Kenzie (Co-author) / Byrne, Jared (Thesis director) / Larson, Wiley (Committee member) / Kneer, Danny (Committee member) / Barrett, The Honors College (Contributor) / Department of Marketing (Contributor)
Created2023-05